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两角和与差的正弦和余弦

两角和与差的正弦和余弦. 两角和与差的正弦公式 :. S (α+β). S (α-β).

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两角和与差的正弦和余弦

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  1. 两角和与差的正弦和余弦

  2. 两角和与差的正弦公式: S(α+β) S(α-β)

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